Question

(a + b)^2 - 4ab is equal to

A (a+b)^2
B 2ab
C 4ab
D (a-b)^2​

Answer 1

${(a + b)}^{2} - 4ab \\ = {a}^{2} + {b}^{2} + 2ab - 4ab \\ = {a}^{2} + {b}^{2} + - 2ab \\ = {(a - b)}^{2}$

Correct option is (D)

This is the detailed solution of your question.